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Forum: Aviation History and Nostalgia

25th Feb 2009, 19:14

Replies: 61

Pratt & Whitney R-1830 Twin Wasp radial piston firing order

Views: 52,586

Posted By DAK 6832

Firing order of the P & W 1830

Being part of a team restoring a C47 I asked our team leader what is the firing order of the R1830-92. He said "they" use the "minus 5, plus 9" method. Starting with cyl. number 1. 1 minus 5 = -4...

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